Assessment of the metal contamination evolution in the Loire estuary using Cu and Zn stable isotopes and geochemical data in sediments

Araújo, Daniel F.; Ponzevera, Emmanuel; Briant, Nicolas; Knœry, Joël; Sireau, Teddy; Mojtahid, Meryem; Metzger, Édouard; Brach-Papa, Christophe

doi:10.1016/j.marpolbul.2019.04.034

Cited by 43 publications

(40 citation statements)

References 74 publications

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“…The results are indicative of a conservative mixing source between the two endmembers. Also, experimental data were consistent with previous studies that found Zn isotopes compositions predominantly controlled by a binary mixing between a lithogenic material (δ 66/64 ZnJMC ≈ +0.30 ‰) and Zn issued from multiple anthropogenic sources, which yield an average δ 66/64 ZnJMC ≈ +0.10 ‰ (Araújo et al, 2019;Chen et al, 2009a;Thapalia et al, 2015). Therefore, the combination of the multiple geochemical tools used here allowed the identification of anthropogenic influences along the waterways studied, as summarized in Fig.…”

Section: Investigating Zn Sources and Mixing Processes Using Zn Isotopessupporting

confidence: 89%

Trace metal dynamics in an industrialized Brazilian river: A combined application of Zn isotopes, geochemical partitioning, and multivariate statistics

Tonhá

Araújo

Araujo

et al. 2021

Journal of Environmental Sciences

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The Paraiba do Sul (PSR) and Guandu Rivers (GR) water diversion system (120 km long) is located in the main industrial pole of Brazil and supplies drinking water for 9.4 million people in the metropolitan region of Rio de Janeiro. This study aims to discern the trace metals dynamics in this complex aquatic system. We used a combined approach of geochemical tools such as geochemical partitioning, Zn isotopes signatures, and multivariate statistics. Zinc and Pb concentrations in Suspended Particulate Matter (SPM) and sediments were considerably higher in some sites. The sediment partition of As, Cr, and Cu revealed the residual fraction (F4) as the main fraction for these elements, indicating low mobility. Zinc and Pb were mostly associated with the exchangeable/carbonate (F1) and the reducible (F2) fractions, respectively, implying a higher susceptibility of these elements to being released from sediments. Zinc isotopic compositions of sediments and SPM fell in a binary mixing source process between lithogenic (δ66/64ZnJMC ≈ + 0.30‰) and anthropogenic (δ66/64ZnJMC ≈ + 0.15‰) end members. The lighter δ66/64ZnJMC values accompanied by high Zn concentrations in exchangeable/carbonate fraction (ZnF1) enable the tracking of Zn anthropogenic sources in the studied rivers. Overall, the results indicated that Hg, Pb, and Zn had a dominant anthropogenic origin linked to the industrial activities, while As, Cr, and Cu were mainly associated with lithogenic sources. This work Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site.demonstrates how integrating geochemical tools is valuable for assessing geochemical processes and mixing source effects in anthropized river watersheds.

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Section: Investigating Zn Sources and Mixing Processes Using Zn Isotopessupporting

confidence: 89%

Trace metal dynamics in an industrialized Brazilian river: A combined application of Zn isotopes, geochemical partitioning, and multivariate statistics

Tonhá

Araújo

Araujo

et al. 2021

Journal of Environmental Sciences

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“…However, because most environments are contaminated with a variety of toxic metals, a single isotope study can be applied only where the metal pollution source is simple and limited. Thus, the multi-isotope approach [e.g., Cu and Zn (Fekiacova et al 2015;Araújo et al 2019a), Cu and Pb (Jeong et al 2020c), Zn and Pb (Souto-Oliveira et al 2021), Cu, Zn, and Pb (Araújo et al 2019bSouto-Oliveira et al 2019;Ra 2021a, 2021b) is effective for tracing pollution sources accurately compared with the single-isotope approach.…”

Section: Application Of Multi-isotopes As a Useful Tool For Source Identification In Urban Environmentsmentioning

confidence: 99%

Toxic metal concentrations and Cu–Zn–Pb isotopic compositions in tires

Jeong

2022

J Anal Sci Technol

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Background Particles from non-exhaust emissions derived from traffic activities are a dominant cause of toxic metal pollution in urban environments. Recently, studies applying multiple isotope values using the Iso-source and positive matrix factorization (PMF) models have begun to be used as useful tools to evaluate the contribution of each pollution source in urban environments. However, data on the metal concentrations and isotopic compositions of each potential source are lacking. Therefore, this study presents data on toxic metals and Cu, Zn, and Pb isotopic compositions in tires, which are one of the important non-exhaust emission sources. Findings Among the toxic metals, Zn had the highest concentration in all tire samples, and the mean concentrations were in the order of Zn > Cu > Pb > Sn > Sb > Ni > Cr > As > Cd. Ni, Zn, Sn, and Sb had higher concentrations in domestic tires (South Korea), and the Cu, Cd, and Pb concentrations were relatively higher in imported tires. The mean values of δ65CuAE647, δ66ZnIRMM3702, and 206Pb/207Pb ranged from − 1.04 to − 0.22‰, − 0.09 to − 0.03‰, and 1.1242 to 1.1747, respectively. The concentrations and isotopic compositions of Cu and Pb in the tires showed large differences depending on the product and manufacturer. However, the differences in Zn concentration and δ66ZnIRMM3702 values were very small compared with those of Cu and Pb. The relationships of the Zn concentration and isotopic composition showed that domestic tires are clearly distinguishable from imported tires. Bi-plots of Cu, Zn, and Pb isotopic compositions indicated that tires can be clearly discriminated from natural-origin and other non-exhaust traffic emission sources. Conclusions The multi-isotope signatures of Cu, Zn, and Pb exhibited different isotopic values for other non-exhaust traffic emission sources than for tires, and application of the multi-isotope technique may be a powerful method for distinguishing and managing non-exhaust sources of metal contamination in urban environments.

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“…The detrital-inorganic materials dominate sediment compositions of Toulon bay. However, the estimated natural δ 66 ZnJMC values of +0.14 ±0.12‰ are slightly lighter than the Zn isotopes values reported to the Upper Earth Crust, estimated as +0.28 ±0.05‰ (Chen et al, 2013) and other unpolluted sediments from estuaries worldwide: (+0.28‰, Sepetiba bay, Araújo et al, 2017a;+0.3‰, Gironde estuary, Petit et al, 2015 ; +0.3‰, the Loire estuary, Araújo et al, 2019). This slight enrichment in light isotopes could be attributed to the regional geology.…”

Section: Zn Isotope Systematicmentioning

confidence: 75%

“…Since anthropogenic Cu may derive either from sulfides or oxide ore deposits, Cu isotope systematics can help discriminate the different anthropogenic and natural sources. In environmental studies, Cu isotopes have been a useful tracer in urban aerosol samples (Souto-Oliveira et al, 2019 and in surrounding soils impacted by metallurgical (Mihaljevič et al, 2019;Šillerová et al, 2017) and vineyard activities (Babcsányi et al, 2016;El Azzi et al, 2013), however their applicability in complex and reactive aquatic systems has been more challenging (Araújo et al, 2019;Petit et al, 2013;Viers et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Copper, zinc and lead isotope signatures of sediments from a mediterranean coastal bay impacted by naval activities and urban sources

Araújo

Ponzevera

Briant

et al. 2019

Applied Geochemistry

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Toulon bay is severely impacted by metal contamination induced by past and recent naval activities. In this work, Cu, Zn and Pb isotope compositions and elemental concentrations of fifty-five surface sediments were determined in order to map the spatial distribution of anthropogenic and natural sources along this land-sea continuum. Two subsystems of Toulon Bay, the Small and Large bays, showed wellmarked patterns on metal contamination levels and isotope signatures for Cu and Pb. The Small bay had the highest metal concentrations, and displayed average Pb and Cu isotope compositions of 1.1664 ± 0.0043 (1s, expressed as 206Pb/207Pb ratios) and −0.17 ± 0.19‰ (1s, expressed as δ65CuNIST values), respectively. It contrasted with the Large bay, with moderate to pristine metal concentrations and average Pb and Cu isotope compositions of 1.1763 ± 0.0079 (1s) and +0.08 ± 0.23‰ (1s), respectively. Lead isotope systematics indicated a binary source mixing process involving industrial and natural sources, while Cu isotope systematics showed a ternary mixing process involving two distinct anthropogenic signatures, interpreted as associated to new diffuse anthropogenic sources and old warfare material. In contrast, Zn isotope compositions in the Small and Large bays were practically the same: +0.06 ± 0.05‰ and +0.06 ± 0.11‰ (1s, expressed δ66ZnJMC values), respectively, denoting an overlap between isotope signatures of natural and anthropogenic sources. This study presents the first detailed spatial distributions of Cu and Zn isotope compositions for an aquatic system, and demonstrates the feasibility to use Cu isotopes as tracers of anthropogenic sources in coastal environments. Highlights ► Cu isotope systematic show a mixing process of natural and anthropogenic sources. ► Low Cu contaminated sediments display δ 65 CuNIST values ranging from 0.0 to +0.2‰. ► Contaminated sediments by diffuse sources tend to negative δ 65 CuNIST values. ► Pb isotopes reveal mixing process involving industrial and natural sources. ► Zn isotope system does not allow identifying mixing source processes. Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site.

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Assessment of the metal contamination evolution in the Loire estuary using Cu and Zn stable isotopes and geochemical data in sediments

Cited by 43 publications

References 74 publications

Trace metal dynamics in an industrialized Brazilian river: A combined application of Zn isotopes, geochemical partitioning, and multivariate statistics

Trace metal dynamics in an industrialized Brazilian river: A combined application of Zn isotopes, geochemical partitioning, and multivariate statistics

Toxic metal concentrations and Cu–Zn–Pb isotopic compositions in tires

Copper, zinc and lead isotope signatures of sediments from a mediterranean coastal bay impacted by naval activities and urban sources

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